问Python不和谐的机器人在使用时不会说什么

EN

from communitybot.playgame import Game
from discord.ext.commands import Bot
from communitybot.utils import (
    start_game
)

bot = Bot(
    description=description,
    command_prefix="$",
    pm_help=False)
bot.remove_command('help')

@bot.group(pass_context=True)
async def game(ctx):
    if ctx.invoked_subcommand is None:
        await bot.say('Usage: $game start')

@game.command()
async def start():
    start_game(bot)
    await bot.say("**Game started**")

from communitybot.playgame import Game
from communitybot.settings import BOT_ACCOUNT
from steem import Steem

def start_game(discordbot=None):
    c = Game(
        get_steem_conn(),
        BOT_ACCOUNT,
        discordbot = discordbot
    )
    c.start_game()

class Game:

    def __init__(self, steemd_instance, bot_account, discordbot=None):
        self.s = steemd_instance
        self.bot_account = bot_account
        self.discord = discordbot

    def start_game(self):

        #do something

        if self.discord is not None:
            self.discord.say('**did something**')